RISC-V Design · All levels
Hazard Detection Basics in Decode: Silicon PPA Impact
Silicon PPA Impact for Hazard Detection Basics in Decode.
Silicon PPA impact
Silicon PPA Impact for Hazard Detection Basics in Decode is anchored on RAW stall cycles per kilo-instruction and percentage of avoidable stalls removed by forwarding.. Convert observations into mechanism-backed decisions with explicit ownership.
Frequency gains that increase bubbles may lose net throughput.
Area growth from extension logic must justify workload value.
Power and thermal stability are release gates, not secondary metrics.
PPA trend view
diagram
BEFORE / AFTER TREND - Hazard Detection Basics in Decode
RAW stall cycles per kilo-instruction and percentage of avoidable stalls removed by forwarding.
^
| o target band
| o after fix + reruns
| o
| o baseline (failing)
+--------------------------------------------------> iteration
capture issue isolate mechanism close + monitor
Use this view to confirm the gain is causal and stable across seeds.